One-loop contributions for A⁰ → ℓ ℓ V with ℓ ≡ e, μ and V≡ γ, Z in Higgs Extensions of the Standard Model

2024/04/03 by Khiem Hong Phan, Phan, Khiem Hong, Dzung Tri Tran +3
Physics and Astronomy · #Particle physics theoretical and experimental studies #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2404.02417

Abstract

We present one-loop formulas for the decay of CP-odd Higgs A⁰ → ℓ ℓ V with ℓ ≡ e, μ and V≡ γ, Z in Higgs Extensions of the Standard Model, considering two higgs doublet model with a complex (and real) scalar, two higgs doublet model as well as triplet higgs model. Analytic results for one-loop amplitudes are expressed in terms of Passarino-Veltman functions following the standard notations of \tt LoopTools. As a result, physical results can be generated numerically by using the package. In phenomenological results, the total decay widths and the differential decay rates with respect to the invariant mass of lepton pair are analyzed for two typical models such as two higgs doublet model and triplet higgs model.

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